Bobbin for lace-machines.



Patented Aug. 22, I899.

M v PALMER BOBBIN FOR LACE MACHINES.

(Application filed Mar. 12, 1808.)

2 Sheets-Shut l.

No. 63l,472.

(No Model.)

gtizeis% 0124M No. 631,472. Patented Aug. 22, I899. M. v. PALMER. BOBBIN FOR LACE MACHINES.

- (Application filed Mar. 12, 1898.)

(No Model.) 7 2 Sheets-Sheet 2.

fin tar:

THE nonms rcrzns ca. Puo-roumoq WASNINOYON, o. c,

UNITED STATES Y PATENT OFFICE.

MARO v. PALMER, or WILLIMANTIO, CONNECTICUT, ASSIGNOR TO THE AMERICAN THREAD COMPANY, OF JERSEY CITY, NEW JERSEY, AND

NEW YORK, N. Y.

BOBBIN FOR LACE-MACHINES.

srEcmr-cA'rI'oN forming part of Letters Patent No. 631,472, dated August 22, 1899.

. Application filed March 12,1898. Serial No. 6 73 64'7. (No model.)

To all whom it may concern:

Be it known that I, MARO V. PALMER, a citizen of the United States, residing at Willimantic, in the county of Windham and State of Oonnecticut,have invented certain new and useful Improvements in Bobbins for Lace-Machines, of which the following is a full, clear, and exact descriptiomwhereby any one skilled in the art can make and use the same.

' The object of my invention is to provide a sectional bobbin particularly adapted for use ina lace-making machine and capable of containing and holding a cop or mass of thread wound to the desired size and shape and prepared for use, thus avoiding the winding of each separate bobbin, which is now in use in the art in lace-making machines. In the prior art in this class of machines for lace-making the bobbins used are disks of comparative large diameter and of great thinness as compared with the diameter. In fact, what may be called the barrel is only a fraction of an inch in length, while the heads are several inches in diameter. This peculiarity in the construction limits the space which may be occupied by the thread, and therefore the length of thread which may be contained in a bobbin of given diameter.

My invention consists in a sectional bobbin of this class provided with meeting surfaces and interlocking means on said surfaces.

It further consists in such a sectional bobbin with interengaging and interlocking parts the operation of which involves the partial rotation of one section upon the other; and it further consists in the details of the several parts making up the structure as a whole, as hereinafter described, and more particularly pointed out in the claims.

Referring to the drawings, Figure 1 is a plan view of the old form of bobbin-carriage for a lace-making machine, showing the bobbin in place. Fig.2 is a detail view in crosssection through said bobbin on enlarged scale. Fig. 3 is a detail interior view of one section of my improved bobbin, showing a cop in place. Fig. 4 is a view in central section through the said form of my improved bobbin on enlarged scale. Fig. 5 is a plan view of the outside of the bobbin, illustrating the operation of the locking-tongues. Fig. 6 is another view illustrating the final position of the interengaging parts. Fig. 7 is a detail sectional view, on enlarged scale, on plane denoted byline 00 a; in Fig. 6, illustrating the operation of the locking devices.

In the accompanying drawings the letter a denotes a carriage of a form commonly used in lace-making machines and consisting of a segment of thin metal with a socket b, adapted to receive the thin bobbin 0, this carriage corresponding to a part called the shuttle in a sewing-machine. The bobbin used in a car riage of this form is very thin and usually formed'of two sections 0 c composing What may be termed the heads and having between them when they are united, as by riveting, a socket d, into which the thread is wound to make up the bobbin-load. Owing to this peculiarity of construction of the bobbin the amount of thread load is obviously limited, and, furthermore,considerable time is used in winding the load into the bobbin, this requiring special means and special operatives. In the practice of my invention I avoid all objections of this kind, making the bobbin in two sections f g and provided with means for removably securing the parts together. This enables me to construct the parts of thin sheet metal by striking them up, as by means of dies, and it further enables a completely-wound cop of thread It to be put into the socket between the bobbin-sections in the operation of loading the bobbin. A much greater length of thread can also be used than has ever been used in the bobbin of the prior art.

In my improved form of bobbin there is provided near the center of one or both of the shells means for centralizing and localizing the cop, consisting in one form of a shoulder or hub 1', formed by a central indentation of circular outline, and preferably both sections f g are provided with corresponding shoulders 1L '6, as a matter of convenience, but not essential. One or both of the bobbinsections fg are provided with means, as spurs Z, which are adapted to engage the short barrel 7., usually of paper, on which the cop is wound, or to engage that surface of the mass of thread in contact with the shoulder 21, this engagement being of a degree to prevent rotation of the cop independent of the bobbin. This feature of my invention is embodied when the sections of the bobbin, as to one or both, are provided with anchoring means or clamping means which hold the cop from rotation independent of the bobbin.

The bobbin-sections are provided with interlocking means m, and these in the preferred form consist of tongues m,located,preferably,equidistant from the center of the head and evenly disposed about that center in any desired number and struck up from the substance of the head, from which they project inward a distance sufficient to enable the corresponding locking-tongues of the opposite heads to be engaged each with the 'other and then by a partial rotation of one head with reference to the other to secure the two heads together against axial displacement. These tongues may be so made, and a feature of my invention provides that they may be so made, as to exert a spring influence each upon the other, so as to cause the two head-sections of the bobbins to be drawn forcibly toward each other to a degree depending upon the stiffness of the tongues.

A further feature of my invention consists in constructing the sectional bobbin so that when the two sections are placed together without the cop the interval shall be less between the surfaces lying between the edge of the cop support or shoulderz' and the outer edge or periphery of the bobbin than the normal thickness of the cop adapted to be used in the bobbin.. In addition to this feature the sectional bobbin is made either with the sides flexible, so as to give a yielding pressure upon the sides of the cop or thread load, or else the spring-arms which hold the two sections together are constructed to maintain a constant contact of the heads of the bobbin upon the opposite sides of the cop, the object in both instances being to prevent the thread in unwinding from being drawn between the edge of the mass of the cop and the inner surface of the bobbin. In addition to the interlocking means the first object is the prevention of any axial movement of the two bobbin-sections. The device is also provided with means for preventing any accidental rotation or partial rotation of one bobbin-section upon the other, whereby they might be accidentally unlocked in use-thatis,the bobbin-sections are provided with locking means to prevent axial movement of the sections one upon the other and also loekin g means to upon one of the tongues, engaginga like projection n or recess therein on the opposing tongue. It is obvious that this bobbin-section may be struck up of thin metal and both as to the locking-tongues and details of their construction may be made interchangeablethat is, the sections may be all struck in the same dies and when put together face to face will then form corresponding inter-engaging and interlocking bobbin-sections. This forms an important feature of my invention.

I claim as my invention- 1. As an improved article of manufacture, a sectional bobbin comprisingcorresponding heads each having projecting and cooperating attaching means whose operation involves a partial rotation of one head with relation to the other, and locking means which hold the heads against reverse rotation.

2. In combination in a sectional bobbin, two heads having means for locating and holding a removable cop or mass of thread against rotation in the bobbin, and means for removably securing the bobbin-sections together, all substantially as described.

3. In combination in a sectional bobbin, corresponding heads having means for holding a cop of thread against rotation in the bobbin, and means including projecting tongues disposed about and with reference to the axial center of the bobbin, and adapted to engage like tongues on the opposing section, all substantially as described.

4. In a sectional bobbin, in combination, corresponding heads provided with means for holding a cop or mass of thread against rotation, and with means for removably securing the heads each to the other, all substantially as described.

5. In a sectional bobbin, in combination, corresponding heads provided with means for holding a cop or mass of thread against rotation in the bobbin, means for attaching the heads each to the other and holding them with a yielding pressure whereby the opposite heads bind upon the periphery of the cop during its unwinding, all substantially as described.

MARO V. PALMER.

\Vitnesses:

ARTHUR 13. JENKINS, CHAS. L. BURDETT. 

